Their son was painfully shy .
他们的儿子非常害羞。
The dog was painfully thin .
那条狗瘦得可怜。
He was painfully aware of his lack of experience.
他痛苦地意识到自己缺乏经验。
Progress has been painfully slow .
进度慢得令人焦急。
He banged his knee painfully against the desk.
他的膝盖撞到桌子上，疼得很。
painfully acquired experience
艰难获得的经验
1.痛苦地
2.煞费苦心地
1.in a painful way
2.used for emphasizing how annoying or unpleasant something is or how upset it makes you feel
1.As he managed to get out of the shoe painfully, he was surprised to find the cause of his lasting torment was only a grain of sand.
当他忍着揪心的痛把鞋脱掉时，他发现让自己痛苦并放弃比赛的竟仅仅是一粒沙子。
2.That young guy painfully reminisced of the dark days when he was deeply addicted to the drugs.
这个年轻人痛苦地回忆起了他吸毒上瘾的黑暗岁月
3.Just stand back, ' he growled, as he lifted himself painfully to his feet. Obviously his leg hurt him, and he sat down quickly.
“站后面点儿。”他吼道，并艰难地站了起来。显然，他的脚受了伤，他赶紧又坐下来。
4.Their son, Andy, was recently knocked off his mother's health insurance and only painfully reinstated for a large fee.
他们的儿子安迪最近也被迫从母亲的健康保险中分离出来，要想恢复的话，只能忍痛再付一大笔钱。
5.After a while slowly and painfully he began to tell his story.
过了一会儿，他开始慢慢地、痛苦地讲起了他的故事。
6.When they returned the bus, the girl sat with Vingo again, and after a while, slowly and painfully, he began to tell his story.
回到车上的时候，这个女孩又坐在了他的身旁，不久，他便带着一缕忧伤娓娓道来。
7.While tapping out my thoughts on the matter, it seemed painfully clear how difficult of a question this really is.
当我敲击着对这件事的想法时，似乎要弄清这个问题的本质是一件非常让人抓耳挠腮的事。
8.But, although it has been painfully reticent, Safe only seems to have bought small slices of western companies so far.
然而，虽然外管局一直煞费苦心的保持缄默，但似乎迄今仅收购了多家西方企业的一小部分股权。
9.When they returned to the bus, the girl sat with Vingo again, and after a while, slowly and painfully, he began to tell his story.
返回公共汽车后，那个女孩子又和文戈坐到了一起。稍过了一会，他开始慢慢地，无不痛苦地讲起了他的故事。
10."Even allowing for that, stone-tool progress looks painfully slow, " says Chris Stringer of the Natural History Museum in London.
“即便如此，石器工具的进步看起来仍然十分缓慢。”伦敦自然历史博物馆的斯特林格克里斯说。